./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/popl20-more-parray-copy.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/popl20-more-parray-copy.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a1f81f307bb0fd2f7d30845e458dba6e8acf9b3ee1da86e74967e4c3005bce62 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 03:06:56,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 03:06:56,966 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 03:06:56,996 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 03:06:56,997 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 03:06:56,999 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 03:06:57,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 03:06:57,004 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 03:06:57,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 03:06:57,009 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 03:06:57,010 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 03:06:57,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 03:06:57,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 03:06:57,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 03:06:57,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 03:06:57,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 03:06:57,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 03:06:57,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 03:06:57,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 03:06:57,035 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 03:06:57,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 03:06:57,037 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 03:06:57,037 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 03:06:57,039 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 03:06:57,043 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 03:06:57,043 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 03:06:57,044 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 03:06:57,045 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 03:06:57,045 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 03:06:57,046 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 03:06:57,046 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 03:06:57,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 03:06:57,048 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 03:06:57,048 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 03:06:57,049 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 03:06:57,049 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 03:06:57,050 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 03:06:57,050 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 03:06:57,050 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 03:06:57,051 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 03:06:57,052 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 03:06:57,052 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-28 03:06:57,081 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 03:06:57,081 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 03:06:57,082 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 03:06:57,082 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 03:06:57,083 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 03:06:57,083 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 03:06:57,084 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 03:06:57,084 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 03:06:57,084 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 03:06:57,084 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 03:06:57,085 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 03:06:57,085 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 03:06:57,085 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 03:06:57,085 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 03:06:57,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-28 03:06:57,086 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 03:06:57,086 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-28 03:06:57,086 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 03:06:57,086 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 03:06:57,086 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 03:06:57,086 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-28 03:06:57,086 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 03:06:57,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 03:06:57,087 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 03:06:57,087 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:06:57,087 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 03:06:57,087 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 03:06:57,087 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-28 03:06:57,087 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 03:06:57,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 03:06:57,088 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-28 03:06:57,088 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-28 03:06:57,088 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-28 03:06:57,088 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a1f81f307bb0fd2f7d30845e458dba6e8acf9b3ee1da86e74967e4c3005bce62 [2021-12-28 03:06:57,355 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 03:06:57,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 03:06:57,371 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 03:06:57,372 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 03:06:57,372 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 03:06:57,374 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/popl20-more-parray-copy.wvr.c [2021-12-28 03:06:57,420 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50e5b85a0/8f39b8d0be194051bedbb98a4dad0a90/FLAGe895159fd [2021-12-28 03:06:57,762 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 03:06:57,763 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-parray-copy.wvr.c [2021-12-28 03:06:57,776 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50e5b85a0/8f39b8d0be194051bedbb98a4dad0a90/FLAGe895159fd [2021-12-28 03:06:58,215 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50e5b85a0/8f39b8d0be194051bedbb98a4dad0a90 [2021-12-28 03:06:58,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 03:06:58,218 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 03:06:58,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 03:06:58,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 03:06:58,223 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 03:06:58,223 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:06:58" (1/1) ... [2021-12-28 03:06:58,224 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eca0190 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:06:58, skipping insertion in model container [2021-12-28 03:06:58,224 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 03:06:58" (1/1) ... [2021-12-28 03:06:58,228 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 03:06:58,243 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 03:06:58,440 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-parray-copy.wvr.c[2385,2398] [2021-12-28 03:06:58,453 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:06:58,459 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 03:06:58,490 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/popl20-more-parray-copy.wvr.c[2385,2398] [2021-12-28 03:06:58,497 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 03:06:58,510 INFO L208 MainTranslator]: Completed translation [2021-12-28 03:06:58,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:06:58 WrapperNode [2021-12-28 03:06:58,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 03:06:58,513 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 03:06:58,513 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 03:06:58,513 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 03:06:58,518 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:06:58" (1/1) ... [2021-12-28 03:06:58,532 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:06:58" (1/1) ... [2021-12-28 03:06:58,558 INFO L137 Inliner]: procedures = 24, calls = 41, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 139 [2021-12-28 03:06:58,559 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 03:06:58,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 03:06:58,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 03:06:58,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 03:06:58,566 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:06:58" (1/1) ... [2021-12-28 03:06:58,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:06:58" (1/1) ... [2021-12-28 03:06:58,577 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:06:58" (1/1) ... [2021-12-28 03:06:58,578 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:06:58" (1/1) ... [2021-12-28 03:06:58,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:06:58" (1/1) ... [2021-12-28 03:06:58,596 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:06:58" (1/1) ... [2021-12-28 03:06:58,599 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:06:58" (1/1) ... [2021-12-28 03:06:58,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 03:06:58,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 03:06:58,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 03:06:58,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 03:06:58,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:06:58" (1/1) ... [2021-12-28 03:06:58,612 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 03:06:58,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:06:58,685 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 03:06:58,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 03:06:58,727 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 03:06:58,727 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-12-28 03:06:58,727 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-12-28 03:06:58,727 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-12-28 03:06:58,727 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-12-28 03:06:58,728 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-12-28 03:06:58,728 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-12-28 03:06:58,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 03:06:58,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 03:06:58,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 03:06:58,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 03:06:58,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 03:06:58,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 03:06:58,729 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 03:06:58,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 03:06:58,730 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-12-28 03:06:58,790 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 03:06:58,791 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 03:06:59,073 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 03:06:59,080 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 03:06:59,081 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-12-28 03:06:59,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:06:59 BoogieIcfgContainer [2021-12-28 03:06:59,092 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 03:06:59,093 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 03:06:59,093 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 03:06:59,095 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 03:06:59,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 03:06:58" (1/3) ... [2021-12-28 03:06:59,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@adfbeed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:06:59, skipping insertion in model container [2021-12-28 03:06:59,096 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 03:06:58" (2/3) ... [2021-12-28 03:06:59,096 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@adfbeed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 03:06:59, skipping insertion in model container [2021-12-28 03:06:59,097 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 03:06:59" (3/3) ... [2021-12-28 03:06:59,098 INFO L111 eAbstractionObserver]: Analyzing ICFG popl20-more-parray-copy.wvr.c [2021-12-28 03:06:59,101 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-12-28 03:06:59,103 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 03:06:59,103 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-28 03:06:59,103 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-12-28 03:06:59,159 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,160 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,160 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,160 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,161 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,161 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,161 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,161 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,162 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,162 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,162 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,163 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,164 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,164 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,164 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,165 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,166 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,167 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,168 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,169 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,169 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,169 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,169 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,169 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,170 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,170 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,170 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,170 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,171 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,173 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,173 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,174 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,174 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,174 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,175 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,175 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,175 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,175 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,176 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,176 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,176 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,176 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,182 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,183 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,183 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,183 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,184 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,184 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,184 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,184 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,184 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,184 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,185 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,185 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,185 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,185 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,185 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,185 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,186 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,186 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,186 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,186 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,187 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,187 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,187 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,187 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,187 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,189 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,189 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,189 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,189 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,190 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,190 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,190 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,190 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,203 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,204 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,204 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,204 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,204 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,204 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,205 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,205 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,205 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,205 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,206 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,207 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,207 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,208 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,209 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,219 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,219 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork0_~i~1 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,219 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post3| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,220 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,220 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~mem4| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,224 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,225 WARN L322 ript$VariableManager]: TermVariabe thread3Thread1of1ForFork1_~i~2 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,225 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post5| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,225 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,225 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~mem6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,227 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,227 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~mem2| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,227 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork2_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,227 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,228 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-12-28 03:06:59,230 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-12-28 03:06:59,268 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 03:06:59,272 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 03:06:59,273 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-28 03:06:59,282 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 205 places, 212 transitions, 448 flow [2021-12-28 03:06:59,403 INFO L129 PetriNetUnfolder]: 17/209 cut-off events. [2021-12-28 03:06:59,404 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-28 03:06:59,408 INFO L84 FinitePrefix]: Finished finitePrefix Result has 222 conditions, 209 events. 17/209 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 125 event pairs, 0 based on Foata normal form. 0/191 useless extension candidates. Maximal degree in co-relation 154. Up to 2 conditions per place. [2021-12-28 03:06:59,409 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 212 transitions, 448 flow [2021-12-28 03:06:59,419 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 198 transitions, 414 flow [2021-12-28 03:06:59,469 INFO L129 PetriNetUnfolder]: 17/197 cut-off events. [2021-12-28 03:06:59,470 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-12-28 03:06:59,470 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:06:59,471 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:06:59,471 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:06:59,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:06:59,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1230389299, now seen corresponding path program 1 times [2021-12-28 03:06:59,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:06:59,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331033376] [2021-12-28 03:06:59,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:06:59,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:06:59,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:06:59,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:06:59,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:06:59,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331033376] [2021-12-28 03:06:59,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331033376] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:06:59,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:06:59,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 03:06:59,717 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118610095] [2021-12-28 03:06:59,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:06:59,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-12-28 03:06:59,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:06:59,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-12-28 03:06:59,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-12-28 03:06:59,746 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 212 [2021-12-28 03:06:59,752 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 198 transitions, 414 flow. Second operand has 2 states, 2 states have (on average 197.0) internal successors, (394), 2 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:06:59,753 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:06:59,753 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 212 [2021-12-28 03:06:59,754 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:06:59,818 INFO L129 PetriNetUnfolder]: 5/186 cut-off events. [2021-12-28 03:06:59,819 INFO L130 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2021-12-28 03:06:59,820 INFO L84 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 186 events. 5/186 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 118 event pairs, 0 based on Foata normal form. 18/192 useless extension candidates. Maximal degree in co-relation 147. Up to 7 conditions per place. [2021-12-28 03:06:59,822 INFO L132 encePairwiseOnDemand]: 200/212 looper letters, 6 selfloop transitions, 0 changer transitions 7/186 dead transitions. [2021-12-28 03:06:59,823 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 186 transitions, 402 flow [2021-12-28 03:06:59,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-12-28 03:06:59,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-12-28 03:06:59,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 404 transitions. [2021-12-28 03:06:59,841 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9528301886792453 [2021-12-28 03:06:59,842 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 404 transitions. [2021-12-28 03:06:59,842 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 404 transitions. [2021-12-28 03:06:59,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:06:59,847 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 404 transitions. [2021-12-28 03:06:59,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 202.0) internal successors, (404), 2 states have internal predecessors, (404), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:06:59,857 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:06:59,857 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 212.0) internal successors, (636), 3 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:06:59,859 INFO L186 Difference]: Start difference. First operand has 191 places, 198 transitions, 414 flow. Second operand 2 states and 404 transitions. [2021-12-28 03:06:59,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 186 transitions, 402 flow [2021-12-28 03:06:59,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 186 transitions, 390 flow, removed 0 selfloop flow, removed 6 redundant places. [2021-12-28 03:06:59,870 INFO L242 Difference]: Finished difference. Result has 186 places, 179 transitions, 364 flow [2021-12-28 03:06:59,872 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=378, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=364, PETRI_PLACES=186, PETRI_TRANSITIONS=179} [2021-12-28 03:06:59,876 INFO L334 CegarLoopForPetriNet]: 191 programPoint places, -5 predicate places. [2021-12-28 03:06:59,876 INFO L470 AbstractCegarLoop]: Abstraction has has 186 places, 179 transitions, 364 flow [2021-12-28 03:06:59,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 197.0) internal successors, (394), 2 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:06:59,877 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:06:59,877 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:06:59,878 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 03:06:59,878 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:06:59,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:06:59,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1340485429, now seen corresponding path program 1 times [2021-12-28 03:06:59,880 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:06:59,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201036124] [2021-12-28 03:06:59,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:06:59,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:00,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:00,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 03:07:00,132 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:00,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201036124] [2021-12-28 03:07:00,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201036124] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:07:00,133 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 03:07:00,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-28 03:07:00,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535157762] [2021-12-28 03:07:00,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:07:00,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:07:00,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:00,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:07:00,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-28 03:07:00,137 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 212 [2021-12-28 03:07:00,138 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 179 transitions, 364 flow. Second operand has 8 states, 8 states have (on average 138.25) internal successors, (1106), 8 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:00,138 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:00,138 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 212 [2021-12-28 03:07:00,138 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:00,433 INFO L129 PetriNetUnfolder]: 27/324 cut-off events. [2021-12-28 03:07:00,433 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2021-12-28 03:07:00,434 INFO L84 FinitePrefix]: Finished finitePrefix Result has 465 conditions, 324 events. 27/324 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 599 event pairs, 12 based on Foata normal form. 2/301 useless extension candidates. Maximal degree in co-relation 462. Up to 87 conditions per place. [2021-12-28 03:07:00,435 INFO L132 encePairwiseOnDemand]: 197/212 looper letters, 58 selfloop transitions, 10 changer transitions 31/218 dead transitions. [2021-12-28 03:07:00,435 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 218 transitions, 640 flow [2021-12-28 03:07:00,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-28 03:07:00,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2021-12-28 03:07:00,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1817 transitions. [2021-12-28 03:07:00,439 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.659288824383164 [2021-12-28 03:07:00,440 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1817 transitions. [2021-12-28 03:07:00,440 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1817 transitions. [2021-12-28 03:07:00,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:00,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1817 transitions. [2021-12-28 03:07:00,444 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 139.76923076923077) internal successors, (1817), 13 states have internal predecessors, (1817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:00,449 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 212.0) internal successors, (2968), 14 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:00,450 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 212.0) internal successors, (2968), 14 states have internal predecessors, (2968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:00,450 INFO L186 Difference]: Start difference. First operand has 186 places, 179 transitions, 364 flow. Second operand 13 states and 1817 transitions. [2021-12-28 03:07:00,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 218 transitions, 640 flow [2021-12-28 03:07:00,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 218 transitions, 640 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-12-28 03:07:00,454 INFO L242 Difference]: Finished difference. Result has 198 places, 181 transitions, 414 flow [2021-12-28 03:07:00,454 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=414, PETRI_PLACES=198, PETRI_TRANSITIONS=181} [2021-12-28 03:07:00,455 INFO L334 CegarLoopForPetriNet]: 191 programPoint places, 7 predicate places. [2021-12-28 03:07:00,455 INFO L470 AbstractCegarLoop]: Abstraction has has 198 places, 181 transitions, 414 flow [2021-12-28 03:07:00,456 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 138.25) internal successors, (1106), 8 states have internal predecessors, (1106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:00,456 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:00,456 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:00,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 03:07:00,457 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:00,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:00,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1470203334, now seen corresponding path program 1 times [2021-12-28 03:07:00,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:00,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [506436196] [2021-12-28 03:07:00,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:00,458 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:00,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 03:07:00,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:00,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [506436196] [2021-12-28 03:07:00,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [506436196] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:07:00,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750055635] [2021-12-28 03:07:00,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:00,602 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:07:00,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:07:00,607 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:07:00,645 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 03:07:00,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:00,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 03:07:00,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:07:01,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 03:07:01,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:07:01,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 03:07:01,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750055635] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-28 03:07:01,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:07:01,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2021-12-28 03:07:01,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423129464] [2021-12-28 03:07:01,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:07:01,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 03:07:01,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:01,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 03:07:01,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:07:01,535 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 212 [2021-12-28 03:07:01,537 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 181 transitions, 414 flow. Second operand has 9 states, 9 states have (on average 151.55555555555554) internal successors, (1364), 9 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:01,537 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:01,537 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 212 [2021-12-28 03:07:01,537 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:01,903 INFO L129 PetriNetUnfolder]: 1034/1969 cut-off events. [2021-12-28 03:07:01,903 INFO L130 PetriNetUnfolder]: For 141/141 co-relation queries the response was YES. [2021-12-28 03:07:01,907 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3564 conditions, 1969 events. 1034/1969 cut-off events. For 141/141 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 10728 event pairs, 238 based on Foata normal form. 0/1569 useless extension candidates. Maximal degree in co-relation 3553. Up to 447 conditions per place. [2021-12-28 03:07:01,915 INFO L132 encePairwiseOnDemand]: 201/212 looper letters, 94 selfloop transitions, 17 changer transitions 0/238 dead transitions. [2021-12-28 03:07:01,915 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 238 transitions, 761 flow [2021-12-28 03:07:01,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 03:07:01,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-28 03:07:01,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1727 transitions. [2021-12-28 03:07:01,919 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7405660377358491 [2021-12-28 03:07:01,919 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1727 transitions. [2021-12-28 03:07:01,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1727 transitions. [2021-12-28 03:07:01,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:01,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1727 transitions. [2021-12-28 03:07:01,923 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 157.0) internal successors, (1727), 11 states have internal predecessors, (1727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:01,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 212.0) internal successors, (2544), 12 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:01,927 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 212.0) internal successors, (2544), 12 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:01,927 INFO L186 Difference]: Start difference. First operand has 198 places, 181 transitions, 414 flow. Second operand 11 states and 1727 transitions. [2021-12-28 03:07:01,927 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 238 transitions, 761 flow [2021-12-28 03:07:01,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 238 transitions, 731 flow, removed 7 selfloop flow, removed 10 redundant places. [2021-12-28 03:07:01,932 INFO L242 Difference]: Finished difference. Result has 196 places, 193 transitions, 478 flow [2021-12-28 03:07:01,932 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=478, PETRI_PLACES=196, PETRI_TRANSITIONS=193} [2021-12-28 03:07:01,933 INFO L334 CegarLoopForPetriNet]: 191 programPoint places, 5 predicate places. [2021-12-28 03:07:01,933 INFO L470 AbstractCegarLoop]: Abstraction has has 196 places, 193 transitions, 478 flow [2021-12-28 03:07:01,934 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 151.55555555555554) internal successors, (1364), 9 states have internal predecessors, (1364), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:01,934 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:01,934 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:01,951 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-28 03:07:02,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:07:02,148 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:02,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:02,148 INFO L85 PathProgramCache]: Analyzing trace with hash -378263568, now seen corresponding path program 2 times [2021-12-28 03:07:02,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:02,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213579329] [2021-12-28 03:07:02,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:02,149 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:02,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:02,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 03:07:02,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:02,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213579329] [2021-12-28 03:07:02,354 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213579329] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:07:02,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085523604] [2021-12-28 03:07:02,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:07:02,355 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:07:02,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:07:02,357 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:07:02,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 03:07:02,462 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-28 03:07:02,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:07:02,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-28 03:07:02,475 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:07:02,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:02,693 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:07:02,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085523604] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:07:02,694 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:07:02,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-12-28 03:07:02,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949634119] [2021-12-28 03:07:02,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:07:02,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-28 03:07:02,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:02,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-28 03:07:02,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-12-28 03:07:02,697 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 145 out of 212 [2021-12-28 03:07:02,698 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 193 transitions, 478 flow. Second operand has 6 states, 6 states have (on average 151.83333333333334) internal successors, (911), 6 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:02,698 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:02,698 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 145 of 212 [2021-12-28 03:07:02,698 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:02,863 INFO L129 PetriNetUnfolder]: 213/810 cut-off events. [2021-12-28 03:07:02,863 INFO L130 PetriNetUnfolder]: For 354/478 co-relation queries the response was YES. [2021-12-28 03:07:02,866 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1533 conditions, 810 events. 213/810 cut-off events. For 354/478 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4294 event pairs, 68 based on Foata normal form. 8/750 useless extension candidates. Maximal degree in co-relation 1523. Up to 215 conditions per place. [2021-12-28 03:07:02,869 INFO L132 encePairwiseOnDemand]: 204/212 looper letters, 58 selfloop transitions, 5 changer transitions 13/219 dead transitions. [2021-12-28 03:07:02,869 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 219 transitions, 717 flow [2021-12-28 03:07:02,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-28 03:07:02,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2021-12-28 03:07:02,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1083 transitions. [2021-12-28 03:07:02,872 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7297843665768194 [2021-12-28 03:07:02,872 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1083 transitions. [2021-12-28 03:07:02,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1083 transitions. [2021-12-28 03:07:02,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:02,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1083 transitions. [2021-12-28 03:07:02,875 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 154.71428571428572) internal successors, (1083), 7 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:02,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 212.0) internal successors, (1696), 8 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:02,877 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 212.0) internal successors, (1696), 8 states have internal predecessors, (1696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:02,877 INFO L186 Difference]: Start difference. First operand has 196 places, 193 transitions, 478 flow. Second operand 7 states and 1083 transitions. [2021-12-28 03:07:02,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 219 transitions, 717 flow [2021-12-28 03:07:02,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 219 transitions, 712 flow, removed 0 selfloop flow, removed 3 redundant places. [2021-12-28 03:07:02,883 INFO L242 Difference]: Finished difference. Result has 203 places, 195 transitions, 501 flow [2021-12-28 03:07:02,883 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=188, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=501, PETRI_PLACES=203, PETRI_TRANSITIONS=195} [2021-12-28 03:07:02,885 INFO L334 CegarLoopForPetriNet]: 191 programPoint places, 12 predicate places. [2021-12-28 03:07:02,885 INFO L470 AbstractCegarLoop]: Abstraction has has 203 places, 195 transitions, 501 flow [2021-12-28 03:07:02,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 151.83333333333334) internal successors, (911), 6 states have internal predecessors, (911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:02,885 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:02,885 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:02,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 03:07:03,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-28 03:07:03,102 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:03,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:03,103 INFO L85 PathProgramCache]: Analyzing trace with hash -2145004234, now seen corresponding path program 1 times [2021-12-28 03:07:03,103 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:03,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980549216] [2021-12-28 03:07:03,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:03,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:03,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:03,237 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:03,237 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:03,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980549216] [2021-12-28 03:07:03,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980549216] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:07:03,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238060156] [2021-12-28 03:07:03,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:03,239 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:07:03,239 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:07:03,240 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:07:03,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-28 03:07:03,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:03,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 03:07:03,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:07:03,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:03,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:07:03,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:03,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238060156] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-28 03:07:03,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:07:03,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2021-12-28 03:07:03,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794846051] [2021-12-28 03:07:03,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:07:03,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 03:07:03,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:03,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 03:07:03,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2021-12-28 03:07:03,889 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 212 [2021-12-28 03:07:03,891 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 195 transitions, 501 flow. Second operand has 9 states, 9 states have (on average 151.66666666666666) internal successors, (1365), 9 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:03,891 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:03,891 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 212 [2021-12-28 03:07:03,891 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:04,346 INFO L129 PetriNetUnfolder]: 1698/3565 cut-off events. [2021-12-28 03:07:04,346 INFO L130 PetriNetUnfolder]: For 2112/2354 co-relation queries the response was YES. [2021-12-28 03:07:04,355 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8100 conditions, 3565 events. 1698/3565 cut-off events. For 2112/2354 co-relation queries the response was YES. Maximal size of possible extension queue 264. Compared 26906 event pairs, 212 based on Foata normal form. 235/3719 useless extension candidates. Maximal degree in co-relation 8086. Up to 856 conditions per place. [2021-12-28 03:07:04,367 INFO L132 encePairwiseOnDemand]: 200/212 looper letters, 91 selfloop transitions, 30 changer transitions 6/255 dead transitions. [2021-12-28 03:07:04,367 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 255 transitions, 988 flow [2021-12-28 03:07:04,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 03:07:04,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-28 03:07:04,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1717 transitions. [2021-12-28 03:07:04,371 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7362778730703259 [2021-12-28 03:07:04,371 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1717 transitions. [2021-12-28 03:07:04,371 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1717 transitions. [2021-12-28 03:07:04,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:04,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1717 transitions. [2021-12-28 03:07:04,375 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 156.0909090909091) internal successors, (1717), 11 states have internal predecessors, (1717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:04,377 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 212.0) internal successors, (2544), 12 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:04,378 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 212.0) internal successors, (2544), 12 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:04,378 INFO L186 Difference]: Start difference. First operand has 203 places, 195 transitions, 501 flow. Second operand 11 states and 1717 transitions. [2021-12-28 03:07:04,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 255 transitions, 988 flow [2021-12-28 03:07:04,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 255 transitions, 978 flow, removed 2 selfloop flow, removed 4 redundant places. [2021-12-28 03:07:04,390 INFO L242 Difference]: Finished difference. Result has 213 places, 212 transitions, 699 flow [2021-12-28 03:07:04,390 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=491, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=699, PETRI_PLACES=213, PETRI_TRANSITIONS=212} [2021-12-28 03:07:04,390 INFO L334 CegarLoopForPetriNet]: 191 programPoint places, 22 predicate places. [2021-12-28 03:07:04,391 INFO L470 AbstractCegarLoop]: Abstraction has has 213 places, 212 transitions, 699 flow [2021-12-28 03:07:04,391 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 151.66666666666666) internal successors, (1365), 9 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:04,391 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:04,391 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:04,408 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2021-12-28 03:07:04,608 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:07:04,608 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:04,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:04,609 INFO L85 PathProgramCache]: Analyzing trace with hash -577225570, now seen corresponding path program 2 times [2021-12-28 03:07:04,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:04,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305800780] [2021-12-28 03:07:04,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:04,610 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:04,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:04,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:04,718 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:04,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305800780] [2021-12-28 03:07:04,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305800780] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:07:04,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354577071] [2021-12-28 03:07:04,719 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-28 03:07:04,719 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:07:04,719 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:07:04,740 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:07:04,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-28 03:07:04,871 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-28 03:07:04,871 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:07:04,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-28 03:07:04,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:07:05,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-28 03:07:05,118 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:07:05,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354577071] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:07:05,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:07:05,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2021-12-28 03:07:05,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283212526] [2021-12-28 03:07:05,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:07:05,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:07:05,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:05,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:07:05,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2021-12-28 03:07:05,120 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 212 [2021-12-28 03:07:05,121 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 212 transitions, 699 flow. Second operand has 8 states, 8 states have (on average 141.75) internal successors, (1134), 8 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:05,121 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:05,121 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 212 [2021-12-28 03:07:05,121 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:05,730 INFO L129 PetriNetUnfolder]: 1529/3306 cut-off events. [2021-12-28 03:07:05,730 INFO L130 PetriNetUnfolder]: For 4724/4967 co-relation queries the response was YES. [2021-12-28 03:07:05,754 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8884 conditions, 3306 events. 1529/3306 cut-off events. For 4724/4967 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 24973 event pairs, 554 based on Foata normal form. 184/3396 useless extension candidates. Maximal degree in co-relation 8866. Up to 1058 conditions per place. [2021-12-28 03:07:05,788 INFO L132 encePairwiseOnDemand]: 201/212 looper letters, 134 selfloop transitions, 22 changer transitions 7/290 dead transitions. [2021-12-28 03:07:05,788 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 290 transitions, 1352 flow [2021-12-28 03:07:05,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:07:05,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-28 03:07:05,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1351 transitions. [2021-12-28 03:07:05,792 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7080712788259959 [2021-12-28 03:07:05,792 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1351 transitions. [2021-12-28 03:07:05,793 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1351 transitions. [2021-12-28 03:07:05,793 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:05,793 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1351 transitions. [2021-12-28 03:07:05,796 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 150.11111111111111) internal successors, (1351), 9 states have internal predecessors, (1351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:05,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 212.0) internal successors, (2120), 10 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:05,799 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 212.0) internal successors, (2120), 10 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:05,799 INFO L186 Difference]: Start difference. First operand has 213 places, 212 transitions, 699 flow. Second operand 9 states and 1351 transitions. [2021-12-28 03:07:05,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 290 transitions, 1352 flow [2021-12-28 03:07:05,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 290 transitions, 1323 flow, removed 11 selfloop flow, removed 5 redundant places. [2021-12-28 03:07:05,822 INFO L242 Difference]: Finished difference. Result has 221 places, 224 transitions, 881 flow [2021-12-28 03:07:05,822 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=682, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=881, PETRI_PLACES=221, PETRI_TRANSITIONS=224} [2021-12-28 03:07:05,824 INFO L334 CegarLoopForPetriNet]: 191 programPoint places, 30 predicate places. [2021-12-28 03:07:05,824 INFO L470 AbstractCegarLoop]: Abstraction has has 221 places, 224 transitions, 881 flow [2021-12-28 03:07:05,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 141.75) internal successors, (1134), 8 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:05,825 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:05,825 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:05,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-28 03:07:06,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:07:06,040 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:06,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:06,040 INFO L85 PathProgramCache]: Analyzing trace with hash 184538384, now seen corresponding path program 3 times [2021-12-28 03:07:06,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:06,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908985268] [2021-12-28 03:07:06,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:06,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:06,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:06,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:06,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:06,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908985268] [2021-12-28 03:07:06,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908985268] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:07:06,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499457982] [2021-12-28 03:07:06,174 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-28 03:07:06,174 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:07:06,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:07:06,181 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:07:06,237 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-28 03:07:06,305 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2021-12-28 03:07:06,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:07:06,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 333 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-28 03:07:06,309 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:07:06,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-28 03:07:06,562 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 03:07:06,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499457982] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 03:07:06,562 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-28 03:07:06,562 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2021-12-28 03:07:06,562 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764069852] [2021-12-28 03:07:06,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:07:06,563 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-28 03:07:06,563 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:06,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-28 03:07:06,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-12-28 03:07:06,564 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 212 [2021-12-28 03:07:06,565 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 224 transitions, 881 flow. Second operand has 8 states, 8 states have (on average 141.75) internal successors, (1134), 8 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:06,565 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:06,565 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 212 [2021-12-28 03:07:06,565 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:07,161 INFO L129 PetriNetUnfolder]: 2004/4058 cut-off events. [2021-12-28 03:07:07,162 INFO L130 PetriNetUnfolder]: For 7007/7253 co-relation queries the response was YES. [2021-12-28 03:07:07,242 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11576 conditions, 4058 events. 2004/4058 cut-off events. For 7007/7253 co-relation queries the response was YES. Maximal size of possible extension queue 299. Compared 31315 event pairs, 690 based on Foata normal form. 237/4171 useless extension candidates. Maximal degree in co-relation 11553. Up to 1533 conditions per place. [2021-12-28 03:07:07,265 INFO L132 encePairwiseOnDemand]: 201/212 looper letters, 137 selfloop transitions, 25 changer transitions 7/296 dead transitions. [2021-12-28 03:07:07,265 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 296 transitions, 1535 flow [2021-12-28 03:07:07,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-28 03:07:07,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2021-12-28 03:07:07,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1349 transitions. [2021-12-28 03:07:07,268 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7070230607966457 [2021-12-28 03:07:07,268 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1349 transitions. [2021-12-28 03:07:07,268 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1349 transitions. [2021-12-28 03:07:07,268 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:07,268 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1349 transitions. [2021-12-28 03:07:07,270 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 149.88888888888889) internal successors, (1349), 9 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:07,272 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 212.0) internal successors, (2120), 10 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:07,273 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 212.0) internal successors, (2120), 10 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:07,273 INFO L186 Difference]: Start difference. First operand has 221 places, 224 transitions, 881 flow. Second operand 9 states and 1349 transitions. [2021-12-28 03:07:07,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 296 transitions, 1535 flow [2021-12-28 03:07:07,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 296 transitions, 1502 flow, removed 8 selfloop flow, removed 4 redundant places. [2021-12-28 03:07:07,295 INFO L242 Difference]: Finished difference. Result has 229 places, 235 transitions, 1078 flow [2021-12-28 03:07:07,296 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=861, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1078, PETRI_PLACES=229, PETRI_TRANSITIONS=235} [2021-12-28 03:07:07,296 INFO L334 CegarLoopForPetriNet]: 191 programPoint places, 38 predicate places. [2021-12-28 03:07:07,296 INFO L470 AbstractCegarLoop]: Abstraction has has 229 places, 235 transitions, 1078 flow [2021-12-28 03:07:07,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 141.75) internal successors, (1134), 8 states have internal predecessors, (1134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:07,297 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:07,297 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:07,314 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-28 03:07:07,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:07:07,514 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:07,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:07,515 INFO L85 PathProgramCache]: Analyzing trace with hash 675682568, now seen corresponding path program 4 times [2021-12-28 03:07:07,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:07,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200558980] [2021-12-28 03:07:07,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:07,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:07,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:07,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:07,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:07,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200558980] [2021-12-28 03:07:07,626 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200558980] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:07:07,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [604561689] [2021-12-28 03:07:07,626 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-28 03:07:07,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:07:07,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:07:07,637 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:07:07,638 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-28 03:07:07,710 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-28 03:07:07,711 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:07:07,712 INFO L263 TraceCheckSpWp]: Trace formula consists of 334 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-28 03:07:07,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:07:08,004 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:08,005 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:07:08,415 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:08,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [604561689] provided 1 perfect and 1 imperfect interpolant sequences [2021-12-28 03:07:08,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-12-28 03:07:08,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 20 [2021-12-28 03:07:08,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193476804] [2021-12-28 03:07:08,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 03:07:08,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-28 03:07:08,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:08,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-28 03:07:08,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=302, Unknown=0, NotChecked=0, Total=380 [2021-12-28 03:07:08,419 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 212 [2021-12-28 03:07:08,420 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 235 transitions, 1078 flow. Second operand has 9 states, 9 states have (on average 151.66666666666666) internal successors, (1365), 9 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:08,420 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:08,420 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 212 [2021-12-28 03:07:08,420 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:09,124 INFO L129 PetriNetUnfolder]: 2304/4811 cut-off events. [2021-12-28 03:07:09,124 INFO L130 PetriNetUnfolder]: For 10551/10826 co-relation queries the response was YES. [2021-12-28 03:07:09,142 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13933 conditions, 4811 events. 2304/4811 cut-off events. For 10551/10826 co-relation queries the response was YES. Maximal size of possible extension queue 348. Compared 39499 event pairs, 502 based on Foata normal form. 262/4976 useless extension candidates. Maximal degree in co-relation 13906. Up to 1174 conditions per place. [2021-12-28 03:07:09,167 INFO L132 encePairwiseOnDemand]: 200/212 looper letters, 125 selfloop transitions, 48 changer transitions 2/303 dead transitions. [2021-12-28 03:07:09,167 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 303 transitions, 1769 flow [2021-12-28 03:07:09,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-28 03:07:09,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2021-12-28 03:07:09,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1739 transitions. [2021-12-28 03:07:09,170 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7457118353344768 [2021-12-28 03:07:09,170 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1739 transitions. [2021-12-28 03:07:09,171 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1739 transitions. [2021-12-28 03:07:09,171 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:09,171 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1739 transitions. [2021-12-28 03:07:09,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 158.0909090909091) internal successors, (1739), 11 states have internal predecessors, (1739), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:09,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 212.0) internal successors, (2544), 12 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:09,177 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 212.0) internal successors, (2544), 12 states have internal predecessors, (2544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:09,177 INFO L186 Difference]: Start difference. First operand has 229 places, 235 transitions, 1078 flow. Second operand 11 states and 1739 transitions. [2021-12-28 03:07:09,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 303 transitions, 1769 flow [2021-12-28 03:07:09,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 303 transitions, 1726 flow, removed 11 selfloop flow, removed 4 redundant places. [2021-12-28 03:07:09,212 INFO L242 Difference]: Finished difference. Result has 238 places, 251 transitions, 1392 flow [2021-12-28 03:07:09,213 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=1044, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1392, PETRI_PLACES=238, PETRI_TRANSITIONS=251} [2021-12-28 03:07:09,215 INFO L334 CegarLoopForPetriNet]: 191 programPoint places, 47 predicate places. [2021-12-28 03:07:09,215 INFO L470 AbstractCegarLoop]: Abstraction has has 238 places, 251 transitions, 1392 flow [2021-12-28 03:07:09,215 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 151.66666666666666) internal successors, (1365), 9 states have internal predecessors, (1365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:09,215 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:09,216 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:09,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-28 03:07:09,433 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:07:09,434 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:09,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:09,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1375243136, now seen corresponding path program 5 times [2021-12-28 03:07:09,434 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:09,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354453031] [2021-12-28 03:07:09,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:09,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:09,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:09,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:09,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:09,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354453031] [2021-12-28 03:07:09,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354453031] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:07:09,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437211203] [2021-12-28 03:07:09,535 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-28 03:07:09,535 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:07:09,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:07:09,536 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:07:09,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-28 03:07:09,626 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-28 03:07:09,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-28 03:07:09,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 372 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 03:07:09,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:07:09,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:09,863 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:07:10,064 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-12-28 03:07:10,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437211203] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:07:10,065 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 03:07:10,065 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 17 [2021-12-28 03:07:10,065 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412885223] [2021-12-28 03:07:10,065 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 03:07:10,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-28 03:07:10,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:10,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-28 03:07:10,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2021-12-28 03:07:10,070 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 212 [2021-12-28 03:07:10,071 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 251 transitions, 1392 flow. Second operand has 17 states, 17 states have (on average 147.0) internal successors, (2499), 17 states have internal predecessors, (2499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:10,072 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:10,072 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 212 [2021-12-28 03:07:10,072 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:12,570 INFO L129 PetriNetUnfolder]: 8160/15044 cut-off events. [2021-12-28 03:07:12,570 INFO L130 PetriNetUnfolder]: For 45897/45918 co-relation queries the response was YES. [2021-12-28 03:07:12,751 INFO L84 FinitePrefix]: Finished finitePrefix Result has 47607 conditions, 15044 events. 8160/15044 cut-off events. For 45897/45918 co-relation queries the response was YES. Maximal size of possible extension queue 520. Compared 120402 event pairs, 453 based on Foata normal form. 21/15023 useless extension candidates. Maximal degree in co-relation 47577. Up to 1274 conditions per place. [2021-12-28 03:07:12,816 INFO L132 encePairwiseOnDemand]: 192/212 looper letters, 356 selfloop transitions, 203 changer transitions 6/687 dead transitions. [2021-12-28 03:07:12,816 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 272 places, 687 transitions, 4861 flow [2021-12-28 03:07:12,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-12-28 03:07:12,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2021-12-28 03:07:12,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 5435 transitions. [2021-12-28 03:07:12,826 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.7324797843665768 [2021-12-28 03:07:12,826 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 5435 transitions. [2021-12-28 03:07:12,826 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 5435 transitions. [2021-12-28 03:07:12,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:12,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 5435 transitions. [2021-12-28 03:07:12,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 155.28571428571428) internal successors, (5435), 35 states have internal predecessors, (5435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:12,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 212.0) internal successors, (7632), 36 states have internal predecessors, (7632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:12,860 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 212.0) internal successors, (7632), 36 states have internal predecessors, (7632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:12,860 INFO L186 Difference]: Start difference. First operand has 238 places, 251 transitions, 1392 flow. Second operand 35 states and 5435 transitions. [2021-12-28 03:07:12,860 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 272 places, 687 transitions, 4861 flow [2021-12-28 03:07:13,081 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 687 transitions, 4802 flow, removed 26 selfloop flow, removed 4 redundant places. [2021-12-28 03:07:13,088 INFO L242 Difference]: Finished difference. Result has 276 places, 385 transitions, 3245 flow [2021-12-28 03:07:13,089 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=1371, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=3245, PETRI_PLACES=276, PETRI_TRANSITIONS=385} [2021-12-28 03:07:13,089 INFO L334 CegarLoopForPetriNet]: 191 programPoint places, 85 predicate places. [2021-12-28 03:07:13,089 INFO L470 AbstractCegarLoop]: Abstraction has has 276 places, 385 transitions, 3245 flow [2021-12-28 03:07:13,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 147.0) internal successors, (2499), 17 states have internal predecessors, (2499), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:13,090 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:13,090 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:13,124 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-28 03:07:13,324 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:07:13,325 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:13,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:13,325 INFO L85 PathProgramCache]: Analyzing trace with hash -686560330, now seen corresponding path program 1 times [2021-12-28 03:07:13,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:13,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455837175] [2021-12-28 03:07:13,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:13,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:13,481 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 03:07:13,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:13,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455837175] [2021-12-28 03:07:13,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455837175] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:07:13,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507636173] [2021-12-28 03:07:13,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:13,483 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:07:13,483 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:07:13,484 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:07:13,533 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-28 03:07:13,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:13,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-28 03:07:13,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:07:14,036 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 03:07:14,036 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:07:14,395 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 03:07:14,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [507636173] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:07:14,396 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 03:07:14,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 27 [2021-12-28 03:07:14,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928013284] [2021-12-28 03:07:14,396 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 03:07:14,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-28 03:07:14,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:14,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-28 03:07:14,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=592, Unknown=0, NotChecked=0, Total=702 [2021-12-28 03:07:14,403 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 212 [2021-12-28 03:07:14,405 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 385 transitions, 3245 flow. Second operand has 27 states, 27 states have (on average 124.18518518518519) internal successors, (3353), 27 states have internal predecessors, (3353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:14,405 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:14,405 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 212 [2021-12-28 03:07:14,405 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:16,035 INFO L129 PetriNetUnfolder]: 2414/7031 cut-off events. [2021-12-28 03:07:16,035 INFO L130 PetriNetUnfolder]: For 38646/39096 co-relation queries the response was YES. [2021-12-28 03:07:16,084 INFO L84 FinitePrefix]: Finished finitePrefix Result has 24561 conditions, 7031 events. 2414/7031 cut-off events. For 38646/39096 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 64336 event pairs, 797 based on Foata normal form. 311/7215 useless extension candidates. Maximal degree in co-relation 24523. Up to 2153 conditions per place. [2021-12-28 03:07:16,115 INFO L132 encePairwiseOnDemand]: 182/212 looper letters, 348 selfloop transitions, 70 changer transitions 2/599 dead transitions. [2021-12-28 03:07:16,115 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 599 transitions, 5903 flow [2021-12-28 03:07:16,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-28 03:07:16,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2021-12-28 03:07:16,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3794 transitions. [2021-12-28 03:07:16,119 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.5965408805031447 [2021-12-28 03:07:16,119 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3794 transitions. [2021-12-28 03:07:16,119 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3794 transitions. [2021-12-28 03:07:16,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 03:07:16,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3794 transitions. [2021-12-28 03:07:16,124 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 126.46666666666667) internal successors, (3794), 30 states have internal predecessors, (3794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:16,130 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 212.0) internal successors, (6572), 31 states have internal predecessors, (6572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:16,132 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 212.0) internal successors, (6572), 31 states have internal predecessors, (6572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:16,132 INFO L186 Difference]: Start difference. First operand has 276 places, 385 transitions, 3245 flow. Second operand 30 states and 3794 transitions. [2021-12-28 03:07:16,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 599 transitions, 5903 flow [2021-12-28 03:07:16,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 599 transitions, 5639 flow, removed 74 selfloop flow, removed 10 redundant places. [2021-12-28 03:07:16,357 INFO L242 Difference]: Finished difference. Result has 302 places, 440 transitions, 3883 flow [2021-12-28 03:07:16,358 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=3091, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=3883, PETRI_PLACES=302, PETRI_TRANSITIONS=440} [2021-12-28 03:07:16,358 INFO L334 CegarLoopForPetriNet]: 191 programPoint places, 111 predicate places. [2021-12-28 03:07:16,359 INFO L470 AbstractCegarLoop]: Abstraction has has 302 places, 440 transitions, 3883 flow [2021-12-28 03:07:16,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 124.18518518518519) internal successors, (3353), 27 states have internal predecessors, (3353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:16,360 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-12-28 03:07:16,360 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 03:07:16,379 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-28 03:07:16,575 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-28 03:07:16,576 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-12-28 03:07:16,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 03:07:16,576 INFO L85 PathProgramCache]: Analyzing trace with hash -761571678, now seen corresponding path program 1 times [2021-12-28 03:07:16,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 03:07:16,577 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839946771] [2021-12-28 03:07:16,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:16,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 03:07:16,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:17,468 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 03:07:17,469 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 03:07:17,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839946771] [2021-12-28 03:07:17,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839946771] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 03:07:17,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203036275] [2021-12-28 03:07:17,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 03:07:17,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 03:07:17,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 03:07:17,470 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-28 03:07:17,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-28 03:07:17,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 03:07:17,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 385 conjuncts, 60 conjunts are in the unsatisfiable core [2021-12-28 03:07:17,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 03:07:17,663 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-28 03:07:17,989 INFO L353 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-28 03:07:17,990 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-28 03:07:18,414 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 15 [2021-12-28 03:07:18,877 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-28 03:07:18,881 INFO L353 Elim1Store]: treesize reduction 9, result has 25.0 percent of original size [2021-12-28 03:07:18,881 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 13 [2021-12-28 03:07:18,897 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 03:07:18,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 03:07:31,310 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-28 03:07:31,311 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 98 [2021-12-28 03:07:31,413 INFO L353 Elim1Store]: treesize reduction 18, result has 5.3 percent of original size [2021-12-28 03:07:31,414 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 34 [2021-12-28 03:07:31,447 INFO L353 Elim1Store]: treesize reduction 9, result has 43.8 percent of original size [2021-12-28 03:07:31,447 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 24 [2021-12-28 03:07:31,455 INFO L353 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2021-12-28 03:07:31,456 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 56 treesize of output 1 [2021-12-28 03:07:43,621 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-28 03:07:43,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203036275] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 03:07:43,622 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 03:07:43,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 28, 20] total 64 [2021-12-28 03:07:43,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229758586] [2021-12-28 03:07:43,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 03:07:43,631 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-12-28 03:07:43,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 03:07:43,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-12-28 03:07:43,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=450, Invalid=3566, Unknown=16, NotChecked=0, Total=4032 [2021-12-28 03:07:43,635 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 212 [2021-12-28 03:07:43,640 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 440 transitions, 3883 flow. Second operand has 64 states, 64 states have (on average 85.078125) internal successors, (5445), 64 states have internal predecessors, (5445), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 03:07:43,640 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-12-28 03:07:43,640 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 212 [2021-12-28 03:07:43,640 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-12-28 03:07:58,913 WARN L228 SmtUtils]: Spent 12.31s on a formula simplification. DAG size of input: 69 DAG size of output: 61 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)